Pre-to-syn-rift tholeiitic magmatism in a transtensive hyperextended continental margin: Onshore and offshore magmatism of the Campos Basin, SE Brazil

2021 ◽  
pp. 103218
Author(s):  
Julio Almeida ◽  
Monica Heilbron ◽  
Eliane Guedes ◽  
Franz Neubauer ◽  
Bernroider Manfred ◽  
...  
Keyword(s):  
Continental Margin ◽  
Campos Basin ◽  
Se Brazil ◽  
Tholeiitic Magmatism

Basalt magmatism along the passive continental margin of SE Brazil (Campos basin)

1992 ◽  
Vol 111 (2) ◽  
pp. 143-160 ◽  
Author(s):  
A. M. P. Mizusaki ◽  
R. Petrini ◽  
P. Bellieni ◽  
P. Comin-Chiaramonti ◽  
J. Dias ◽  
...  
Keyword(s):  
Continental Margin ◽  
Passive Continental Margin ◽  
Campos Basin ◽  
Se Brazil ◽  
Basalt Magmatism

scholarly journals Improved epicentral relocation in the offshore Campos basin, SE Brazil, with the RSTT 3D model

2018 ◽  
Vol 85 ◽  
pp. 121-125 ◽  
Author(s):  
Felipe dos Anjos Neves ◽  
Marcelo Assumpção ◽  
João Carlos Dourado ◽  
Frank Le Diagon ◽  
Antonio Ortolan
Keyword(s):  
3D Model ◽  
Campos Basin ◽  
Se Brazil

scholarly journals Facies and depositional environments for the coquinas of the Morro do Chaves Formation, Sergipe-Alagoas Basin, defined by taphonomic and compositional criteria

2015 ◽  
Vol 45 (3) ◽  
pp. 415-429 ◽  
Author(s):  
Ana Carolina Tavares ◽  
Leonardo Borghi ◽  
Patrick Corbett ◽  
Jane Nobre-Lopes ◽  
Raphael Câmara
Keyword(s):  
Continental Margin ◽  
Carbonate Rocks ◽  
Sedimentary Facies ◽  
High Energy ◽  
Depositional Environments ◽  
Campos Basin ◽  
Lacustrine Carbonate ◽  
Paleoenvironmental Interpretation ◽  
Reservoir Description ◽  
Facies Succession

Lacustrine carbonate rocks form important hydrocarbon accumulations along the Brazilian continental margin, some of which are contained in oil fields in which coquinas are one of the main reservoirs (viz. Campos Basin). The complexity and heterogeneity of these deposits make them a challenge in terms of reservoir description. For the necessary classification and paleoenvironmental interpretation of the coquinas, it is essential to evaluate many aspects including biological (such as carbonate productivity), sedimentological (energy regime in the depositional environment, transport of bioclasts, terrigenous supply), taphonomic (fragmentation of shells, abrasion) and diagenetic processes. The facies analysis applied in this study is considered a more appropriate classification approach to understand these coquinas, since it is more flexible and comprehensive than the existing classifications for carbonate rocks. The material investigated here consists of rock samples of the coquinas from the Atol Quarry of the Morro do Chaves Formation (Barremian/Aptian), Sergipe-Alagoas Basin. These rocks that crop out in the Atol quarry complex can be considered as a case study for similar coquinas reservoirs found in the Brazilian continental margin basins. Six sedimentary facies were described, using the main taphonomic (fragmentation of shells) and compositional (presence of micrite and siliciclastic matrix) features as a diagnostic criteria. Two carbonate facies, two mixed carbonate-siliciclastic facies and two siliciclastic facies (mudstones) were identified. From the facies succession, combined with a review of the literature on the subject, the following depositional paleoenvironments were defined: high-energy lake platform, lacustrine delta in a high-energy lake platform and lake-centre. In this paper, a new facies model for the studied coquinas succession is proposed.

scholarly journals Pre-salt rift morphology controls salt tectonics in the Campos Basin, offshore SE Brazil

2021 ◽  
Author(s):  
Francyne B. Amarante ◽  
Christopher A-L. Jackson ◽  
Leonardo M. Pichel ◽  
Claiton M. S. Scherer ◽  
Juliano Kuchle
Keyword(s):  
Hydrocarbon Exploration ◽  
Passive Margin ◽  
Salt Tectonics ◽  
Borehole Data ◽  
Temporal And Spatial Distribution ◽  
South Central ◽  
Campos Basin ◽  
Se Brazil ◽  
Gravity Driven ◽  
Base Salt

<p>Salt-bearing passive margin basins offshore SE Brazil have been and remain attractive for hydrocarbon exploration and production. In the Campos Basin, major reservoir types include post-salt turbidites, which are located in structural traps related to thin-skinned faulting above salt anticlines and rollers. Classic models of gravity-driven salt tectonics commonly depict kinematically linked zones of deformation, characterised by updip extension and downdip contraction, separated by a weakly deformed zone associated with downdip translation above a relatively smooth base-salt surface. We use 2D and 3D seismic reflection and borehole data from the south-central Campos Basin to show that this does not adequately capture the styles of salt-detached gravity-driven deformation above relict, rift-related relief. The base-salt surface is composed of elongated, broadly seaward-dipping ramps with structural relief reaching c. 2 km. These ramps define the boundary between the External High and the External Low, basement structures related to the rift tectonics. Local deformation associated with the base-salt ramps can overprint and/or influence regional, margin-scale patterns of deformation producing kinematically-variable and multiphase salt deformation. We define three domains of thin-skinned deformation: an updip extensional domain, subdivided into subdomains E1 and E2, an intermediate multiphase domain and a downdip contractional domain. The multiphase domain is composed of three types of salt structures with a hybrid extensional-contractional origin and evolution. These are: (i) contractional anticlines that were subjected to later extension and normal faulting; (ii) diapirs with passive and active growth later subjected to regional extension, developing landward-dipping normal faults on the landward flank; and, lastly, (iii) an extensional diapir that was subsequently squeezed. We argue that this multiphase style of deformation occurs as a consequence of base-salt geometry and relief creating local variations of salt flow that localize extension at the top and along the ramps, and contraction at the base. Translation and extension of salt and its overburden across major base-salt ramps resulted in three ramp syncline basins northeast of the study area, partially bounded by salt-detached listric faults. The temporal and spatial distribution and evolution of these and other key salt and overburden structures, and their relationship to base-salt relief, suggest 30 to 60 km of horizontal gravity-driven translation of salt and overburden.</p>

Geometric characterization of igneous intrusions: 3-D seismic insights from the Campos Basin, SE Brazil

2019 ◽  
Vol 102 ◽  
pp. 725-739 ◽  
Author(s):  
Ulisses Miguel da Costa Correia ◽  
Bruno César Zanardo Honório ◽  
Michelle Chaves Kuroda ◽  
Leandro Hartleben Melani ◽  
Alexandre Campane Vidal
Keyword(s):  
Geometric Characterization ◽  
Campos Basin ◽  
Igneous Intrusions ◽  
Se Brazil

scholarly journals The Alegre Lineament and its role over the tectonic evolution of the Campos Basin and adjacent continental margin, Southeastern Brazil

2016 ◽  
Vol 69 ◽  
pp. 226-242 ◽  
Author(s):  
Salomão Silva Calegari ◽  
Mirna Aparecida Neves ◽  
Felipe Guadagnin ◽  
George Sand França ◽  
Maria Gabriela Castillo Vincentelli
Keyword(s):  
Continental Margin ◽  
Tectonic Evolution ◽  
Southeastern Brazil ◽  
Campos Basin

Spirinia lara sp. n. and Spirinia sophia sp. n. (Nematoda, Desmodoridae) from the Brazilian continental margin (Campos Basin, Rio de Janeiro)

Zootaxa ◽  
2009 ◽  
Vol 2081 (1) ◽  
pp. 31-45 ◽  
Author(s):  
MARIA CRISTINA DA SILVA ◽  
FRANCISCO JOSÉ VICTOR DE CASTRO ◽  
MARIANA DA FONSECA CAVALCANTI ◽  
VERÔNICA DA FONSÊCA-GENEVOIS
Keyword(s):  
New Species ◽  
Continental Margin ◽  
Deep Sea ◽  
Rio De Janeiro ◽  
The Body ◽  
Irregular Distribution ◽  
Gland Cells ◽  
Campos Basin ◽  
Two New Species ◽  
Deep Sea Sediments

In deep-sea sediments from Campos Basin two new species of Spirinia were found. Spirinia lara sp. n. is mainly characterized by the presence of paired somatic papillae linked to gland cells and distributed all over the body while Spirinia sophia sp. n. possesses an irregular distribution of these glandular somatic papillae.

scholarly journals Erratum to: Rift to post-rift evolution of a ‘‘passive’’ continental margin: the Ponta Grossa Arch, SE Brazil

2010 ◽  
Vol 99 (7) ◽  
pp. 1615-1617
Author(s):  
A. O. B. Franco-Magalhaes ◽  
P. C. Hackspacher ◽  
U. A. Glasmacher ◽  
A. R. Saad
Keyword(s):  
Continental Margin ◽  
Passive Continental Margin ◽  
Se Brazil
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